An absorption-type proton NMR magnetometer for measuring low magnetic fields

A highly sensitive absorption-type nuclear magnetic resonance (NMR) magnetometer capable of measuring low magnetic fields below 1 mT with a NMR sample volume of 3 cm3 is described. It will be used for calibration purposes in an accredited calibration laboratory. The magnetometer uses a direct digita...

Full description

Saved in:
Bibliographic Details
Published in:Measurement science & technology 2007-03, Vol.18 (3), p.901-906
Main Authors: Beguš, S, Fefer, D
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A highly sensitive absorption-type nuclear magnetic resonance (NMR) magnetometer capable of measuring low magnetic fields below 1 mT with a NMR sample volume of 3 cm3 is described. It will be used for calibration purposes in an accredited calibration laboratory. The magnetometer uses a direct digital synthesizer for generation of the radio frequency signal, a sampling detector for demodulation of the radio frequency signal and a digital signal processor with an analogue-to-digital converter and a digital-to-analogue converter for signal processing using a lock-in technique with a digital phase sensitive detector. Frequency traceability of the NMR magnetometer reference oscillator is established by means of the long-wave transmitter DCF77.
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/18/3/045